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Table 3 Baseline Characteristics of the CXE study population

From: Design and conduct of Caudwell Xtreme Everest: an observational cohort study of variation in human adaptation to progressive environmental hypoxia

 

Group 1

(Trekkers)

Group 2

(Investigators)

Group 2 Subgroup

(Climbers)

Group 2 subgroup

(Lab staff)

 

number (%)

number (%)

number (%)

number (%)

Total

198 (100)

24 (100)

14 (100)

10 (100)

Male

125 (63)

18 (75)

12 (86)

6 (60)

Previous Altitude Exposure(>3500 m)

85 (43)

23 (96)

14 (100)

9 (90)

Previous Extreme Altitude Exposure (>5000 m)

37 (19)

21 (88)

14 (100)

7 (70)

Smoker

13 (7)

0 (0)

0 (0)

0 (0)

Race - white

191 (97)

22 (92)

12 (86)

10 (100)

 

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

Age

44.7 (13.7)

(range: 18-73)

35.2 (9.3)

(range: 19-59)

36 (6.9)

(range: 22-47)

34 (12.2)

(range: 19-59)

Height cm

173 (9.2)

176 (7.0)

178.4 (5.9)

172.7 (2.2)

Weight kg

75.2 (13.6)

77.2 (12.4)

97.8 (0.9)

72.2 (9.5)

BMI

25.1 (3.2)

24.8 (2.9)

25.3 (3.3)

24.1 (2.2)

Hb g/dl

14.5 (1.2)

14 (0.9)

14.2 (0.7)

13.6 (0.9)

Hct

43.7 (2.6)

43.9 (3.4)

43.9 (2.1)

43.5 (3.2)

SpO2%

97.7 (1.6)

97.9 (1.0)

97.9 (1.1)

 

Oxygen content mls/l

196.3 (16.2)

190.1 (11.6)

193.9 (10.0)

184.7 (12)

VO2max mls

2862 (799)

3624 (599)

3785 (505)

3398 (671)

VO2max mls/kg

38.2 (8.5)

47.2 (7.6)

47.4 (8.6)

47.0 (6.5)